|Sensor Systems to Optimize Propulsion for Large Sea Going Ships|
| VAF Instruments is focusing on real life examples of torque and thrust measurement on board of sea-going vessels. These examples will make you aware of the importance of measuring engine and propeller performance. The thrust sensor (TT-Sense®) is based on an optical method to measure the strain at the surface of a large (propeller) shaft.
Highly accurate flow meters together with torque sensors in combination with GPS and Doppler speedlog are important tools to monitor the efficiency of a vessel’s propulsion system. When fuel oil consumption per main engine and per generator set is measured, the ship owner will be able to optimize each engine separately. Torque sensors incorporated in the system, will enable precise propulsion power and engine efficiency or SFOC monitoring.
|Generally speaking, the propeller efficiency itself seems to be forgotten. Last but not least it is the same propeller, that generates the thrust force to sail the ship at a desired speed. The propeller, hull and aft ship are optimized for standard model test conditions, but every experienced seafarer knows that nowadays many ships are not sailing at design speed, design draft and in standard sea conditions frequently.|
|Douwe Vellinga, VAF Instruments|